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src/os/unix/ngx_solaris_sendfilev_chain.c - nginx-1.7.10
Data types defined
Functions defined
Macros defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_event.h>
- #if (NGX_TEST_BUILD_SOLARIS_SENDFILEV)
- typedef struct sendfilevec {
- int sfv_fd;
- u_int sfv_flag;
- off_t sfv_off;
- size_t sfv_len;
- } sendfilevec_t;
- #define SFV_FD_SELF -2
- static ssize_t sendfilev(int fd, const struct sendfilevec *vec,
- int sfvcnt, size_t *xferred)
- {
- return -1;
- }
- ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in,
- off_t limit);
- #endif
- #define NGX_SENDFILEVECS NGX_IOVS_PREALLOCATE
- ngx_chain_t *
- ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
- {
- int fd;
- u_char *prev;
- off_t size, send, prev_send, aligned, fprev;
- size_t sent;
- ssize_t n;
- ngx_int_t eintr;
- ngx_err_t err;
- ngx_uint_t nsfv;
- sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
- ngx_event_t *wev;
- ngx_chain_t *cl;
- wev = c->write;
- if (!wev->ready) {
- return in;
- }
- if (!c->sendfile) {
- return ngx_writev_chain(c, in, limit);
- }
-
- if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) {
- limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize;
- }
- send = 0;
- for ( ;; ) {
- fd = SFV_FD_SELF;
- prev = NULL;
- fprev = 0;
- sfv = NULL;
- eintr = 0;
- sent = 0;
- prev_send = send;
- nsfv = 0;
-
- for (cl = in; cl && send < limit; cl = cl->next) {
- if (ngx_buf_special(cl->buf)) {
- continue;
- }
- if (ngx_buf_in_memory_only(cl->buf)) {
- fd = SFV_FD_SELF;
- size = cl->buf->last - cl->buf->pos;
- if (send + size > limit) {
- size = limit - send;
- }
- if (prev == cl->buf->pos) {
- sfv->sfv_len += (size_t) size;
- } else {
- if (nsfv == NGX_SENDFILEVECS) {
- break;
- }
- sfv = &sfvs[nsfv++];
- sfv->sfv_fd = SFV_FD_SELF;
- sfv->sfv_flag = 0;
- sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
- sfv->sfv_len = (size_t) size;
- }
- prev = cl->buf->pos + (size_t) size;
- send += size;
- } else {
- prev = NULL;
- size = cl->buf->file_last - cl->buf->file_pos;
- if (send + size > limit) {
- size = limit - send;
- aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
- & ~((off_t) ngx_pagesize - 1);
- if (aligned <= cl->buf->file_last) {
- size = aligned - cl->buf->file_pos;
- }
- }
- if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
- sfv->sfv_len += (size_t) size;
- } else {
- if (nsfv == NGX_SENDFILEVECS) {
- break;
- }
- sfv = &sfvs[nsfv++];
- fd = cl->buf->file->fd;
- sfv->sfv_fd = fd;
- sfv->sfv_flag = 0;
- sfv->sfv_off = cl->buf->file_pos;
- sfv->sfv_len = (size_t) size;
- }
- fprev = cl->buf->file_pos + size;
- send += size;
- }
- }
- n = sendfilev(c->fd, sfvs, nsfv, &sent);
- if (n == -1) {
- err = ngx_errno;
- switch (err) {
- case NGX_EAGAIN:
- break;
- case NGX_EINTR:
- eintr = 1;
- break;
- default:
- wev->error = 1;
- ngx_connection_error(c, err, "sendfilev() failed");
- return NGX_CHAIN_ERROR;
- }
- ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
- "sendfilev() sent only %uz bytes", sent);
- }
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "sendfilev: %z %z", n, sent);
- c->sent += sent;
- in = ngx_chain_update_sent(in, sent);
- if (eintr) {
- send = prev_send + sent;
- continue;
- }
- if (send - prev_send != (off_t) sent) {
- wev->ready = 0;
- return in;
- }
- if (send >= limit || in == NULL) {
- return in;
- }
- }
- }
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